Hello,
Thank you for your reply. I was advised also by telephone support to undo my reconciliations back to the first duplicate transaction, so back to April 2025. I have done this twice now and still these reconciled transactions keep coming back. I have spent many hours on the phone with the support team. They haven't been able to give me answers or fix the problem. I heard Myob did a big upgrade, and this may be causing the issue. I have emailed as well but they have not replied. I have given up with this accounting system and looking into a more reliable company.